Answer these questions, and I think you'll find these jokesters become a lot more helpful...
1. Do you want hang on the back, or in sump.
2. What size tank
3. What is your bioload, ie... what kind of fish, how many, how big... be sure to include anything you want to get in the future.
4. Do you feed heavily?
5. Do you keep delicate corals, because if you do, you'll want a better skimmer to deal with any overfeedings, or deaths.
6. What is your actual budget? Remember, a skimmer is a really important piece of equipment. Don't skimp now. You WILL be sorry, someday. Putting a seaclown on a 250 g tank is a recipe for disaster.
7. NEW only or will you consider USED? If you consider Used, you can get more skimmer for your money, and someone here will probably have one for sale.
Without knowing what you have or want, my initial suggestions (from my own exhaustive research) on cheaper skimmers is this:
Hang on the back, Octopus 100 or 200. Look in the filtration forum (lighting and filtration) There is a 50+ page discussion on this skimmer. Seems to blow the remora pro out of the water. Plus, the 100 is only around 120 shipped (eco reef sells them for 130, and you have a local guy to help with any problems. They stand behind the stuff they sell)
In Sump, an ASM G-3 can't be beat for the money. Once again, I don't know what size tank you have, but if it's like 200 gallons, forget what I've said above.
Let us know what you have, post some pics, and most of all, WELCOME!!!!